Pheochromocytoma is a tumor derived from chromaffin cells in the medulla of the adrenal gland and outside the adrenal gland, also known as paraganglioma, which is a relatively common cause of endocrine hypertension due to its large secretion of catecholamines, causing paroxysmal or persistent hypertension as well as metabolic disorders. After the diagnosis of pheochromocytoma is confirmed, the tumor should be surgically removed as early as possible, but adequate drug preparation must be carried out before surgery to avoid anesthesia and large fluctuations in blood pressure during and after surgery which may endanger the patient’s life. If the diagnosis of pheochromocytoma is confirmed, no matter whether the symptoms are obvious or not, you should go to the hospital as soon as possible for regular treatment.